Experience Points (or XP for short) are a measurement of character progress. The player character can earn experience points for killing creatures and solving quests. They are used to determine when a character should gain a new level. Different amounts of experience points are awarded for killing more dangerous creatures. For example, in Fallout 3, killing a deathclaw nets 50 experience points while killing a radroach gives only 1. Experience points can also be gained for disarming mines and traps, picking locks, hacking computers, passing speech challenges, doing sections of a quest and, in Fallout: New Vegas, completing challenges like killing a set amount of an enemy. The number of experience points earned for an accomplishment are not dependent on character level.
XP in Fallout is a conventional type similar to Dungeons and Dragons where levels are separated by a large amount of experience. For example, it takes 1,000 XP to reach level 2, 3,000 for level 3, 6,000 for level 4, and so on.
Fallout 2's XP system is similar to Fallout's. The only major difference is that leveling requires more XP than in Fallout.
Fallout 3 difficulty modifier
Changing the difficulty level will also change the experience gained from killing enemies. Playing on Very Hard instead of Normal makes a kill worth 50% more experience, while playing on Very Easy makes it worth 50% less. For example, a deathclaw is worth 25 XP on Very Easy, 50 XP on Normal and 75 XP on Very Hard.
The additional experience from fights on Very Hard compared to Very Easy is somewhat compensated by the enemies being much tougher. In the end, the player's skills and play style determine which difficulty setting allows for optimal leveling.
XP caps at level 20 on all difficulties without the Broken Steel add-on, which increases the cap to level 30.
Fallout: New Vegas
Fallout: New Vegas does not reward XP based on the level of difficulty selected, despite the manual (PC and X360 version) stating otherwise. This somewhat alleviates the stress encountered while playing the game simultaneously on Hardcore, as it is not necessary to play it on Very Hard.
Unlike Fallout 3, Fallout: New Vegas awards XP for kills made by followers. This increases the usefulness of followers and significantly reduces the hassle of having to compete with them for XP.
The Idiot Savant perk offers significant XP increases, increasing the XP gained from any action by 3x or 5x depending on the perk rank. The higher the Intelligence, the lower the chance of activating the perk.
Similar to Fallout: New Vegas, Fallout 4 also awards experience points for kills made by a follower. However, the player character must damage the target for at least 25% of its Hit Points before the follower makes the kill in order for the experience points to count. XP is also awarded for enemies that kill each other within sight of the player character. In Survival mode, enemies that are killed by the Sole Survivor yield twice as much experience. This is the first time since Fallout 3 where a higher difficulty means more experience gain.
Outside of increasing Intelligence, there are perks and consumables that increase the number of experience points the player character earns.
|Idiot Savant||LCK 5||Randomly increases XP gains by 3x from any action.||001D245E|
|LCK 5, LVL 11||Randomly increases XP gains by 5x from any action.||001D245F|
|LCK 5, LVL 34||Randomly increases XP gains by 5x from any action, and has a chance to grant a 3x XP bonus from kills for a short time afterwards.||001D2460|
|Gift of Gab||Max affinity with Piper Wright||Double XP from persuading people and discovering locations.||00178D54|
|Live & Love||Live & Love perk magazine #4||+25% XP from persuading women||00185CC2|
|Live & Love perk magazine #7||+25% XP from persuading men||001696AE|
|Live & Love perk magazine #8||+5% XP while adventuring with a companion||001696AF|
|Lessons in Blood||Max affinity with Porter Gage||+5% XP from kills||0479EF|
|Perk/Consumable||Requirements||Description||Duration (hours)||Base ID|
|Well Rested*||Sleeping in an un-owned bed||+10% XP||12||0005C526|
|Lover's Embrace*||Sleeping near a romanced companion||+15% XP||12||000F3C1A|
|Quiet Reflection*||Sitting in the pew inside All Faiths Chapel||+5% XP||8||001C4028|
|Squirrel Stew||Crafted at any cooking station||+2% XP||2||00036927|
|Captain's Feast||Reward from Rite of Passage||+10% XP||2||04FA84|
* The sleeping perks and Quiet Reflection do not stack with each other.
Experience points (XP) gained are affected by the player character's current Intelligence stat (INT).
There are multiple ways to increase XP gain:
- Each point of Intelligence grants +2.072% XP.
- (Well) Rested: Resting in a bed for a while grants +5% XP for a varying amount of time depending on bed used and the presence of an ally.
- The Path to Enlightenment: After completing the event, interacting with the Wise Mothman will grant +5% XP for 1 hour.
- Strong meat sweats: Contributing 15 prime meat during Grahm's Meat Cook will grant +5% XP for 15 minutes.
- Public teams:
- Casual team: +1/2/3/4 INT per member and time spent in the team
- Daily Ops team: +25/50/75/100% XP from Daily Ops completion, per member and time spent in the team
- Events team: +25/50/75/100% XP from event completion, per member and time spent in the team
- Hunting team: +25/50/75/100% XP from legendary enemy kills, per member and time spent in the team
|%XP Food/Drink (only 1 at a time)|
|Canned meat stew||Standard||+5% XP for 1 hour|
|Carnivore||+10% XP for 1 hour|
|Carnivore + Strange in Numbers||+12.5% XP for 1 hour|
|Tasty squirrel stew||Standard||+10% XP for 1 hour|
|Carnivore||+20% XP for 1 hour|
|Carnivore + Strange in Numbers||+25% XP for 1 hour|
|Cranberry juice||Standard||+2% XP for 1 hour|
|Herbivore||+4% XP for 1 hour|
|Herbivore + Strange in Numbers||+4.5% XP for 1 hour|
|Cranberry cobbler||Standard||+5% XP for 1 hour|
|Herbivore||+10% XP for 1 hour|
|Herbivore + Strange in Numbers||+12.5% XP for 1 hour|
|Cranberry relish||Standard||+10% XP for 1 hour|
|Herbivore||+20% for 1 hour|
|Herbivore + Strange in Numbers||+25% for 1 hour|
|Nuka-Cola Cranberry||Standard||+2% XP for 30 minutes|
|Cola Nut 1||+4% XP for 30 minutes|
|Cola Nut 2||+6% XP for 30 minutes|
|+INT Food/Drink (only 1 at a time)|
|Broiled scorchbeast brain||Standard||+3 INT for 30 minutes|
|Carnivore||+6 INT for 30 minutes|
|Carnivore + Strange in Numbers||+7.5 INT for 30 minutes|
|Owlet nuggets||Standard||+1 INT for 30 minutes|
|Carnivore||+2 INT for 30 minutes|
|Carnivore + Strange in Numbers||+2.25 INT for 30 minutes|
|Scorchbeast mixed meat stew||Standard||+1 INT for 1 hour|
|Carnivore||+2 INT for 1 hour|
|Carnivore + Strange in Numbers||+2.25 INT for 1 hour|
|Brain bombs||Standard||+3 INT for 1.5 hours|
|Herbivore||+6 INT for 1.5 hours|
|Herbivore + Strange in Numbers||+7.5 INT for 1.5 hours|
|Brain fungus soup||Standard||+2 INT for 30 minutes|
|Herbivore||+4 INT for 30 minutes|
|Herbivore + Strange in Numbers||+4.5 INT for 30 minutes|
|Simple aster tea||Standard||+1 INT for 30 minutes|
|Herbivore||+2 INT for 30 minutes|
|Herbivore + Strange in Numbers||+2.25 INT for 30 minutes|
|Steeped aster tea||Standard||+2 INT for 1 hour|
|Herbivore||+4 INT for 1 hour|
|Herbivore + Strange in Numbers||+4.5 INT for 1 hour|
|Chems (only 1 at a time)|
|Berry Mentats||Standard||+5 INT for 5 minutes|
|Chem Fiend 1||+5 INT for 6.5 minutes|
|Chem Fiend 2||+5 INT for 8 minutes|
|Chem Fiend 3||+5 INT for 10 minutes|
|Daddy-O||Standard||+3 INT for 10 minutes|
|Chem Fiend 1||+3 INT for 13 minutes|
|Chem Fiend 2||+3 INT for 16 minutes|
|Chem Fiend 3||+3 INT for 20 minutes|
|Mentats||Standard||+2 INT for 5 minutes|
|Chem Fiend 1||+2 INT for 6.5 minutes|
|Chem Fiend 2||+2 INT for 8 minutes|
|Chem Fiend 3||+2 INT for 10 minutes|
|X-cell||Standard||+2 INT for 2 minutes|
|Chem Fiend 1||+2 INT for 2.6 minutes|
|Chem Fiend 2||+2 INT for 3.2 minutes|
|Chem Fiend 3||+2 INT for 4 minutes|
|Bobblehead (only 1 at a time)|
|Bobblehead: Leader||Standard||+5% XP for 1 hour|
|Curator||+5% XP for 2 hours|
|Bobblehead: Intelligence||Standard||+2 INT for 1 hour|
|Curator||+2 INT for 2 hours|
|Magazine (only 1 at a time)|
|Backwoodsman #6||Standard||+50% bonus from the XP/INT Cooked foods above for 30 minutes|
|Curator||+50% bonus from the XP/INT Cooked foods above for 1 hour|
|Live & Love #3||Standard||+50% bonus from the XP/INT plant-based foods above for 30 minutes|
|Curator||+50% bonus from the XP/INT plant-based foods above for 1 hour|
|Live & Love #8||Standard||+5% XP for 30 minutes|
|Curator||+5% XP for 1 hour|
|Lunchbox (up to 4 at a time)|
|Lunchbox||1 Lunchbox||+25% XP for 1 hour|
|2 Lunchboxes||+50% XP for 1 hour|
|3 Lunchboxes||+75% XP for 1 hour|
|4 Lunchboxes||+100% XP for 1 hour|
XP in Fallout Tactics are given to all party members, regardless of the number of members. The game does not feature difficulty modifiers; however the Tough Guy game mode can provide 100% XP bonus (30% in versions prior to 1.27).
There are various methods of yielding experience for dwellers:
- Successfully rushing a room that the dweller is working in
- Being in the room when enemies are killed (either during quests or incidents)
- Over time, all dwellers that are not ready to level up and are working in production room will slowly gain experience
Earning experience points and dying or loading an older save right before they register yields the points in the older save.
- This appears to only be a display issue as the points are not added to the total on either platforms, this is easily realized if the player would have gone up a level.
It is possible to earn XP past where a level-up should happen without the game registering the level-up. This results in being stuck at level one. The XP counter may end up reading something like 600/200, indicating that a level-up should have happened 400 XP "ago". This may happen at any level or only from the start of the game. If it happens at the start of the game, beginning a new game fixes this bug, so watching the XP meter closely is a good idea.
- Upon starting a new character, the game will recognize the level 1 character as a continuation of the most recent save (typically a level 30 character). This will make the player unable to level up at some point. This can be fixed by deleting all the save files and starting a new game.
- This can also be solved by following these steps:
- Start a new game on a different profile that has no save file from the game.
- Go to memory under system settings and delete the most recent auto save from the bugged profile.
- Start a new game, and the bug should not occur. If it does, try the same process but exit the town before 200 XP is reached.
- skill points. E.g., if the 1000 XP for completing the quest "Ring-a-Ding-Ding!" would result in going from level 6 to level 8, the skill points that would result from attaining level 7 are lost.
If a single accomplishment results in enough experience to level up twice, the game will register two level-ups but will not award additional
- Fixed in a recent patch.
- Well Rested (120 minutes)
- Well Rested (Firepit) (180 minutes)
- Lover's Embrace (180 minutes)
- Kindred Spirit (180 minutes)
- Effect is lost upon death.
- The effect is lost upon leaving the server.
- Must be on team for at least 5 minutes.
- Bug: Brain bombs wear off upon leaving the server.[verified]
- Each buff duration is timed independently. A 5th lunchbox will dispel, or reset, the 1st lunchbox, and so on.